通过HttpClient请求webService
由于服务端是用webService开发的，android要调用webService服务获取数据，这里采用的是通过HttpClient发送post请求，获取webService数据。
服务端使用的webService框架是axis2，请求数据之前，要封装一个xml格式，再通过post请求，获取服务端数据。
请求的xml格式如下所示：
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<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope"xmlns:sam="http://user.service.xxx.com">
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<soap:Header/>
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<soap:Body>
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<sam:getUserInfo>
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<sam:userName>sunlightcs</sam:userName>
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</sam:getUserInfo>
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</soap:Body>
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</soap:Envelope>
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其中：getUserInfo是方法名，userName是参数名，当然，还可以加多个参数。
下面的代码是向webService发送请求，获取数据，返回的数据是xml形式的，android只要解析xml数据，就可以获得想要的数据了。
返回的数据格式如下：
其中，<ns:return>内的"xxx"可以是json数据，android只需解析标签<ns:return>里的json数据即可。
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.OutputStreamWriter;
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import java.io.Writer;
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import org.apache.http.HttpResponse;
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import org.apache.http.client.HttpClient;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.entity.ContentProducer;
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import org.apache.http.entity.EntityTemplate;
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import org.apache.http.impl.client.DefaultHttpClient;
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import org.apache.http.util.EntityUtils;
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public class ClientTest {
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public static void main(String[] args) {
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ClientTest.httpClientPost();
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}
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private static void httpClientPost() {
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HttpClient client = new DefaultHttpClient();
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HttpPost post = new HttpPost("http://localhost:8080/xxx/services/userService");
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try {
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ContentProducer cp = new ContentProducer() {
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public void writeTo(OutputStream outstream) throws IOException {
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Writer writer = new OutputStreamWriter(outstream, "UTF-8");
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/**
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* 获取请求的xml格式数据
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*/
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String requestXml = getRequestXml();
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writer.write(requestXml);
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writer.flush();
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}
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};
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post.setEntity(new EntityTemplate(cp));
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HttpResponse response = client.execute(post);
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//打印返回的xml数据
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System.out.println(EntityUtils.toString(response.getEntity()));
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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private static String getRequestXml(){
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StringBuilder sb = new StringBuilder("<soap:Envelope xmlns:soap=\"http://www.w3.org/2003/05/soap-envelope\" xmlns:sam=\"http://user.service.xxx.com\">");
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sb.append("<soap:Header/>");
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sb.append("<soap:Body>");
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sb.append("<sam:getUserInfo>");
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sb.append("<sam:userName>sunlightcs</sam:userName>");
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sb.append("</sam:getUserInfo>");
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sb.append("</soap:Body>");
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sb.append("</soap:Envelope>");
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return sb.toString();
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}
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} |
返回的数据格式如下：
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<?xml version=‘1.0‘ encoding=‘UTF-8‘?>
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<soapenv:Envelope xmlns:soapenv="http://www.w3.org/2003/05/soap-envelope">
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<soapenv:Body>
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<ns:getUserInfoResponse xmlns:ns="http://user.service.xxx.com">
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<ns:return>xxx</ns:return>
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</ns:getUserInfoResponse>
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</soapenv:Body>
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</soapenv:Envelope>
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